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Darina [25.2K]
3 years ago
14

Please who can help me?

Mathematics
1 answer:
Natasha2012 [34]3 years ago
4 0
Sorry, very late response since I had other matters to attend to.
Question 1:
A: Incorrect; if that was the case, on day 1, the price would be 150. Instead here, according to the graph, on day 1 the price is 30. 

B: Incorrect; the slope, or rate of change, is 30.
[Note: To calculate the slope, we can take two points (I've chosen points (1,30) [1] and (2,60) [2] for you) and use the formula \frac{y^2 - y^1}{x^2 - x^1}.  \frac{60 - 30}{2 - 1} ⇒ \frac{30}{1}. \frac{x}{1} = x, therefore \frac{30}{1} = 30.]

C; Correct; each day the price increases by (+) 30.

D: Incorrect; the line does not show a constant decrease, but instead a constant increase.

Question 2:
A: Most likely this answer choice. The equation seems to be in slope-intercept form on accounting that the equation has mx and b. M has the x directly after it while the b is a number that stands alone. [Note: Numbers that stand alone and without a variable are constants.] B stands for the y-intercept/initial value, or amount started with. 

In short:
Q1: C
Q2: A

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